an outlet is aban doned, discontinued, or removed, the sections of circuit conductors supplying the outlet shall be removed from the raceway. No splices or reinsulated conductors, such as would be the case of abandoned outlets on loop wiring, shall be allowed in raceways.
372.17 Ampacity of Conductors. The ampacity adjust- ment factors, provided in 310.15(B)(2), shall apply to conductors installed in cellular concrete floor raceways.